SPARKY-JUNIOR: A Newer & Smaller Programmable CDI Ignition
Sparky-Junior is a new design using a new MCU designed just for small engine ignitions. It has newer electronic parts and is a surface mounted device board. It is what I call an all-in-board which has noise filtering on the signal in and temperature compensation. The temperature compensation will retard the timing to prevent knock and to lower the engine temperature on hot days or if the engine temp get's to high. Sparky-Junior will be a perfect for converting glow to gas engines where weight is a concern.
The main features of Sparky-Junior:
- Fully programmable ignition curve using included software that works on any Windows computer.
- Serial programming.
- Whole circuit runs off 5.0 volts.
- Use 6.0 volt to 18 volt battery power.
- Adjustable high voltage output with feedback circuit.
- Adjustable power output use only as much as you need and save battery power.
- Adjustable frequency to match transformer uH and inductive reactance (XL).
- Voltage regulator cuts out when battery voltage goes down below 5.5 volts.
- An All-In-One board that has everything one just one board.
- Easily modified to fire twin even firing engines.
- Includes instructions on use and circuit explanation.
Batteries you can use:
Use a 500maH or greater capacity battery, the circuit will draw a max of 1500ma if you let it but, a current of 500ma or less is normal. I use a regulator so you can use 6 - 18 volt NiCad, NiMH, Lithium Ion / Poly / LiFe but, you should use a volt monitor so you don't wreck the batteries. A battery voltage as close to 6.0 volts is best to reduce heating of the regulator but, with higher voltage & maH you can fly longer (hours) before recharging. The regulator is a surface mount device and is a LDO (Low Drop Out) linear regulator that cuts out at 5.3 volts. Recommended battery volt range is 6.0 to 13.5 volts.
Any question just email me rrichter@unimatrixtech.com.
Sparky-Junior Files: